72166 ⎘
Rotorcraft; Rotors peculiar thereto; Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement for differential adjustment of blade pitch between two or more lifting rotors
ELECTROMECHANICAL ACTUATOR FAIL OPERATIONAL SENSING SYSTEM BASED ON TWO ANGULAR SENSORS
#2PROPULSOR EXTERNAL HYDRAULIC CONTROL SYSTEM
#3HELICOPTER ROTOR SYSTEM
#4CONTROL DEVICE FOR AIRCRAFT
#5Helicopter rotor system
#6Electric vertical take off and landing vehicle
#7UAV WITH AUGMENTED LIFT ROTORS
#8Coaxial rotor systems for VTOL aircraft
#9Winged tiltrotor aircraft
#10Differential thrust vectoring system
#11Bistable pitch propeller system with bidirectional propeller rotation
#12High speed multi-rotor vertical takeoff and landing aircraft
#13Coaxial helicopter and control method thereof
#14APPARATUS FOR AERIAL TRANSPORTATION OF PAYLOAD
#15Method of controlling propellers of a hybrid helicopter, and a hybrid helicopter
#16Coaxial rotor systems for VTOL aircraft
#17Three-steering gear direct-drive coaxial rotor system and flight control method for controlling coaxtal rotor aircraft
#18Eccentrically adjusted rotating scissor pitch control link
#19Elastomeric pitch lock restraint
#20Length adjustable link
#21Spring-loaded link
#22Differential thrust vectoring system
#23Bistable pitch propeller system with bidirectional propeller rotation
#24Folding horn concept for rigid rotor blade fold
#25Rotor head for aerial vehicle
#26Systems and methods for reducing noise based on effective rotor area relative to a center of rotation
#27Systems and methods for maintaining levitation of a rotor relative to a stator
#28Wing tilt actuation system for electric vertical take-off and landing (VTOL) aircraft
#29Wing tilt actuation system for electric vertical take-off and landing (vtol) aircraft
#30Drone propeller apparatus
#31MULTI-BLADE ROTOR SYSTEM
#32Asymmetric aerial vehicle
#33Systems and methods for controlling lift using contra-rotating rotors
#34Systems and methods for dynamically triggering independent stator coils to control pitch of a rotor blade
#35Systems and methods for independent pitch control of rotor blades of rotor assembly to achieve directional control
#36Systems and methods for improved rotor assembly for use with a stator
#37Systems and methods for drive control of a magnetically levitated rotor
#38Multi-rotor Vehicle with Yaw Control and Autorotation
#39Abnormality detection device and control device
#40Flying device
#41Swash plate system for helicopter rotor
#42Tilt-rotor multicopters with variable pitch propellers
#43Use of individual blade control on a propeller or rotor in axial flight for the purpose of aerodynamic braking and power response modulation
#44Multi-rotor roto-craft flying machine
#45Bistable pitch propeller system with bidirectional propeller rotation
#46Steady state differential roll moment control with automated differential lateral control
#47Multi-objective control system with control allocation
#48Hub separation in dual rotor rotary wing aircraft
#49Collective to elevator mixing of a rotary wing aircraft
#50Wind-powered recharging for a weight-shifting coaxial helicopter
#51Main rotor rotational speed control for rotorcraft
#52Rotorcraft rotor and propeller speed
#53Gearbox for a dual rotor, rotary wing aircraft
#54Aerial vehicle with different propeller blade configurations
#55Single collective stick for a rotary wing aircraft
#56Telescoping propeller blades for aerial vehicles
#57Aerial vehicle propulsion mechanism with coaxially aligned propellers
#58Soft in-plane and stiff out-of-plane rotor system
#59Lift offset control of a rotary wing aircraft
#60Independent control for upper and lower rotor of a rotary wing aircraft
#61Dual rotor, rotary wing aircraft
#62Tip clearance measurement of a rotary wing aircraft
#63Central-positioned pitch control device for a coaxial helicopter
#64Multi-rotor vehicle with yaw control and autorotation
#65Method and device for driving rotor
#66Relative acceleration blade position measurement
#67Swashplateless coaxial rotary wing aircraft
#68Soft in-plane and stiff out-of-plane rotor system
#69Control system and method for rotor assembly
#70Rotor system for electrically powered rotorcraft